Minor cleanup for FingerprintDialog

Bug: 67497360

Test: Manual test with test app
Change-Id: I72b4502da411ee92491d6884d6deb72e027a8e9e
diff --git a/packages/SystemUI/src/com/android/systemui/fingerprint/FingerprintDialogImpl.java b/packages/SystemUI/src/com/android/systemui/fingerprint/FingerprintDialogImpl.java
index 1b785a2..262c71a 100644
--- a/packages/SystemUI/src/com/android/systemui/fingerprint/FingerprintDialogImpl.java
+++ b/packages/SystemUI/src/com/android/systemui/fingerprint/FingerprintDialogImpl.java
@@ -92,7 +92,7 @@
             return;
         }
         getComponent(CommandQueue.class).addCallbacks(this);
-        mWindowManager =  (WindowManager) mContext.getSystemService(Context.WINDOW_SERVICE);
+        mWindowManager = (WindowManager) mContext.getSystemService(Context.WINDOW_SERVICE);
         mDialogView = new FingerprintDialogView(mContext, mHandler);
     }